Posterolateral Rotatory Instability

Posterolateral rotatory instability (PLRI) is the most common type of chronic lateral elbow instability. It has been well-defined in the literature by O'Driscoll and others since 1991, yet our understanding of the pathophysiology and biomechanical abnormalities associated with this injury is still evolving. PLRI is part of a spectrum of injury to the soft tissues of the lateral elbow, primarily the lateral ulnar collateral ligament, usually following a traumatic elbow injury, such as an elbow dislocation. There are three stages of PLRI: (1) ...